2011001203 has 4 divisors (see below), whose sum is σ = 2030912208. Its totient is φ = 1991090200.

The previous prime is 2011001197. The next prime is 2011001227. The reversal of 2011001203 is 3021001102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2011001203 - 2¹³ = 2010993011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2011001203.

It is not an unprimeable number, because it can be changed into a prime (2011001303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9955351 + ... + 9955552.

It is an arithmetic number, because the mean of its divisors is an integer number (507728052).

Almost surely, 2^2011001203 is an apocalyptic number.

2011001203 is a deficient number, since it is larger than the sum of its proper divisors (19911005).

2011001203 is a wasteful number, since it uses less digits than its factorization.

2011001203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19911004.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 2011001203 is about 44844.1880626687. The cubic root of 2011001203 is about 1262.2269350027.

Adding to 2011001203 its reverse (3021001102), we get a palindrome (5032002305).

The spelling of 2011001203 in words is "two billion, eleven million, one thousand, two hundred three".